Edge setting or burnishing machine.



PATENTED DEC. 17, 1907.

A. HARRINGTON. EDGE SETTING 0R BURNISHING MACHINE.

APPLICATION FILED 0,072.25. 1905.

4 SHEETS-SHEET 2.

Vl/74M a( 001 f A. HARRINGTON.

EDGE SETTING OR BURNISHING MACHINE. .APPLIOATION FILED 0012.25. 1905.

PATENTBDEG. 17, 19o?.

4 SHEETS-SHEET 4.

y shocks are communicated to the handsand Isubject of' the -Kingof Great Bri =a very rapidly vibrating heador holder and 25 i ALFRED HARRINGTON, 'OF LEICESTER, ENGLAND, ASSIGNOR TO WILLIAMSPIERS, OF LEIOESTER, ENGLAND.

EDGE SETTING' OR 'BURNISHING' MACHINE.

To all 'whowi it may concern:

Be it known that I, ALFRED of Leicester, England, residingraj veifcester, in the county of Leicester, England, have invented certain new and useful Improvements in Edge Setting or Burni-shinghachines, of which the following is a specification.

This invention relates to machinery employed in the manufacture of boots and shoes and has more particular reference to such machines as are used in the finishing opera-v tions of the said goods.

One of' the principal objects of the'lpresent invention is-to construct a machine in such a manner that the boot is automatically Held with pressure against the operatingv tool thereby avoiding the necessity for the operator to do it by hand.

In what are known as edge-setting machines for iinishing or burnishing the edge of the sole of a boot or shoe the tool is carried in when the operator holds by hand the edge of the boot sole against the tool, the action of the latter givesa constant series of shocks orv jars to the boot thus held, which vibratory arms of' the operator and prove veryv detrimental and soon incapacitatehim to a more' orv less degree as is well known. An importantadvantage accruing from this invention is lthat the boot is -held automatically by mechanical means against the tool and thus the disadvantages to the operator above referred to are entirely obviated.

Amachine constructed in accordance with this invention comprises a holder or carrier for the boot and mechanism for automatically presenting or holding the boot to the operating tool and guiding it thereagainst. so that it is maintained in constant contact with the tool until the operation is completed, when the operator removesthe boot and inserts another in its place. The holderfor carrierisconstructed in such a manner that the boot is gripped or clamped thereby and can be instantly released and placed in position in the shortest possible time.

The carrier is supported and moved in .relation to the nishmg ytool in both a longitudinal and lateral direction, the longitudinal movement taking each side of the boot past the tool and the. lateral .movementA causing "Specification of r.Letters Patent. Application filed (Iislibl'ier25lii`.|3l( )5. Serial Ilm-284.360.

Patented Dec. 17, 19072 the bootto .passsthetooL This compound -movementis effected by means of two slides whosemovements arein ahorizonv tal plane atright'anglesto each .othenderived "from suitable; intermediate: mechanism be:-

tween them and; the. driving-shaft, the :said

slides having-l counterweightsf and springsor UNirED sTArEs PATENT oieirrrjz' 4 The said1two slides, by which-the vboot and its .carrieri or: holder. are carried, are operated by.V the following;v mechanism. The upper slidev which actually carries the.v boot: holder` is actuated by a series of levers and connecting Arods orequivalent` operated Ifrorna crank on a worm;wheel drivenfby a',.worm on. the drvngshaft..

The lower slide or. carriageinwhichthe upper slide fits, receives-its lateral motion floip alever operated directly. from a driven s a t.

The invention will however be moreclearly understood. from the following; further descri tion With reference to -theseveral .sheets of fiiawings, in whichz- Figure 1. is afront elevation oamachine constructed according tonthis:V invention, the bootcarrier in this figure, beingremov-ed so as not to obscure any of the arts. Fig. 2., is a sectional plan taken ;on.t efline a-a of Fig. 1 & show-ing the drivingmechanism:to the several parts. Fig. .3., is a.sectionalsside elevation, and Fig. 4., .is a plantaken' on the line b-b of thefsaid Fig. 3.. Figs. 5&1. 6. are side andA end elevationsrespectively: of the boot carrier or holder 8a its slide detached from the machine. grammatic views showing the boot holder: in varying positions -inrelation to the finishing tool. Flgs. 5 to 9 are drawn to a largerl scale than the remainingflgures .and4 the same rei-4 erence characters are used todesi'gnate like parts throughout'ltheldrawings.

" wifi @atThe machine as illustrated in Figs. 1, 2, 3 & 4 comprises generally a mainframe or stand 1 inclosing within the same all the driving mechanism and supporting on thetop thereof an arm 2 carrying the finishing tool and its driving gear, and the slides and guiding mechanism for holding and moving the boot round in contact with the said tool.

Carried in the lower part of the frame 1 is a counter-shaft 3 provided thereon with a ulley 4 adapted to be constantly driven fiom any suitable source of power, and a second pulley 5 on said shaft is arranged to transmit by means of a belt 6 the motion to a shaft 7 in the upper part of the frame and hereinafter referred to as the driving shaft. Fast and loose pulleys 8 & 9 are provided .on the said driving shaft 7 to receive the belt 6 and in order that the machine may be -stopped when required, the belt being moved by any suitable means not shown connected therewith. The edge setting or finishing tool 10 is carried on the lower end of a vertical spindle '11 supported in the head 12 of the arm 2 and a se1ni-rotating or oscillating movement which, in practice is found preferable, is imparted to the said tool and its spindle by the following mechanism. A spindle 13 vertically carried in the upright part of thearm 2 lis provided at the top with a crank 14 and has imparted to it a continuous rotary movement by means of gear wheels 15 & 16 driven from a wheel 17 on the driving shaft 7 (see Fig. l). A wheel 18 on the lower end of the spindle 13 is adapted to gear with the driven wheel 15, the crank 14 on 'the upper end of said spindle being connected by means of a connecting rod 19 to a crank pin 20 on the side of a sleeve 21 carried in the head 12 and through which the tool spindle 11 passes. It will be obvious that, if the throw of the crank 14 is considerably less than that of the crank pin 20 on the sleeve, the former while being continuously rotated, will only partially rotate the latter and a semi-rotatory or oscillating movement of the tool 10 will result.

The vertical spindle 11 is always driven by the rotation of the sleeve 2l but in order to compensate for the rise or upward curvature at the waist of the sole edge of the boot as it is moved -round the tool, the latter togather with its spindle ll is arranged so as to rise and fall vertically as the movement and contour of the boot sole requires. This is effected by providing the tool spindle 11 on each side with a pin or stud 22 which projects through a slot 23 in each side of the driven sleeve 21, and a counterweight 24, though not actually necessary, is preferably attached to the upper end of the tool spindle 1 1, by means of a chain 25 passing over small pulleys 26. The compound movement, necessary for carrying the sides and toe of the boot round in contact with the tool 10, is

effected by means of two superposed slides 27 & 28 movable in a direction at 'a right angle to each other, as is yclearly shown in Fig. 4. boot is carried 1s ositively operated back- .wards and forwar s by means of a crank 29 attached to the upper end of a vertical spindle 30 carried in a bearing 31 on the frame of the machine, the said spindle being continuously rotated by means of a worm wheel 32 driven from a worm 33 on the driving shaft 7.

As will be seen in Fig. 4, connection is made between the slide 27 and crank 29 by means of a double slotted link 34 rigidly attached to rods 35 adapted to slide backwards and forwards in bearings 36 supported on the top of the frame 1. As the crank 29 moves round its circular path, a roller 37 on a crank The upper slide 27 on which the' pin 38 moves laterally along the slot 39 of V the link 34, causing the latter to slide backwards and forwards carrying with it-the slide '27 which is connected to the said link by means of a roller 40, on a pin 41 on the slide, engaging a second slot 42 of the said link 34. In order that the length of movement of the said slide 27 may be varied according to the size of boot to be finished the crank pin 38 is adjustable along the face of the crank 29 such adjustment being made by means of the screw 43. v

The lower slide or carriage 28, in which the upper slide 27 is movably carried, is mounted on a bed 44 attached to or formed integrally with the upper portion of the frame 1 of. the machine, and in order that the said slide 28 may move freely along its bed 44 it is provided with rollers or anti-friction bearings 45. The said slide 28 receives its lateral movement partly from the engagement of the edge of the boot sole with and movement of the latter round the tool; and a lever 46 pivoted at 47 to the inside of the frame 1. The said lever 46 has an oscillating movement imparted to it bymeans of a 'cam 48 engaging a roller 49 on the lower end 50 of said lever, said cam being mounted on a shaft 51 carried in the frame of the machine and being constantly driven from a bevel wheel 52 on the vertical spindle 30 by means of intermediate gear wheels 53, 54 & 55 (see Figs. 2 8a 3). The wheels 53 & 54 are mounted on a shaft 56 carried in the frame 1 and are all continuously driven from the driving shaft 7 through the medium of the worm and worm -wheel 33, 32 before mentioned.

The movement of the edge of the boot sole round the tool 10 is such that as the slide 27 carrying the boot, is moved forward, the engagement of the said edge with the tool causes the lower slide 28 to move laterally away from the center of the machine as the wider part of the sole comes round to the side of the tool, and, in like manner as the slide 27 is moved backwards the gradual narrowing of the sole towards the toe, causes the lower slide 28 to move in the opposi te direction, t'. e. Vtowards the center, the edge of the sides of the sole being constantly held in contact with the tool and on either side of same with a pressure greater than the resistance offered by the tool when in motion, by means of counterweights 57, 58 (Fig. 1) carried on bolts 59 which are connected to each side of the slide 28 by chains 60 passed over pulleys 61 carried on the fixed bed 44. Collars 62 provided on the bolts 59 are adapted to alternately engage fixed brackets 63 through which the bolts pass, that is to say as the lower slide 28 is moved by the action of the sole edge passing round the tool 10, the weight on the side opposite to that in which the lslide is moving, will be raised and constantly keep the said edge pressing against the tool and also draw the said slide back to the center as the upper slide moves backwards. l) moves to the right hand side of the center, the weight 57 will be raised and the collar 62 of the opposite weight will rest upon the bracket 63 and consequently allow the chain 60 of the weight 58 to become slack, until the said slide has moved back to its central position and towards the left hand when the weight 58 will rise and the opposite weight 57 remain out of action. It 1s found desirable however to give the slide 28 a denite movement across the central position when the toe of the boot passes in contact with the tool, and for this pur ose the lever 46 before mentioned is adapte to engage at its u per end a projection 64 on the underside o the said sl1de or carriage and, operated by the before mentioned cam 48, move the slide for such distance as may be required for the toe of plie boot to pass round the front of the too It will be obvious that the movement of the crank 29 and lever 46 are so arranged and timed that the latter does not come into engagement with the projection 64 on the slide until the correct lateral position of the said slide has been reached and further that the formation of the cam 48 is such that a period of rest is given to the lever 46 at the end of each stroke, to enable the projection 64 to move in front of the operating end of the said lever so that a definite movement of the slide 28 in both directions is attained.

It will be seen that while the lateral movement of the toe of the boot past the tool, (as just described) is taking place, it is essential that no forward movement should be imparted to the upper slide 27, and in order to prevent such movement the slot 42 in the sliding link 34, as clearly shown in Fig. 4, is made wider in the center than at each end so that when the said link is moving backwards the roller 40 on the slide 27 will contact with the straight face 65 of the slot until the crank 29 reaches the forward extremity of its For instance when the slide 28 (Fig.

stroke, when the definite lateral movement of the lower slide 28 will take place, the wide center of the link as the same commences to move forward again, allowing the roller 40 to remain free until the curved face 66 of the said slot 42 comes into contact with it to pull the slide 27 forward, simultaneously as the definite lateral movement ceases. It is desirable however that the outer ends of the slot 42 should be approximately of the same width as the diameter of the roller 40, in order that there may not be any loss of time in the reversing of the movement of the link 34 as the crank pin 38 passes the extremity of its backward stroke. The boot carrier or holder, Figs. 5 & 6, preferably consists of a rest 67 provided at its forward end with an adjustable pad 68 to receive the toe and at the rear with a heel rest 69 which may be adjusted by means of a set screw 70 to vary the angle of inclination of the boot relatively to the finishing tool. A lever 71 pivoted at 72 on the rest 67 is suitably shaped at its forward end to press on the upper at or near the toe of the boot to hold the latter in position, said lever being raised from or pressed on to the boot by means of a screw 73 and hand wheel 74, the screw 73 passing through a nut 75 in the opposite end of the lever 71 and being pivoted at its lower end to the rest 67. In view of the rise or upward curvature of the sole edge of the boot from the point where the waist proceedsfrom the forepart to the heel, it is necessary that the boot shall have a further movement than the movements hereinbefore referred to, otherwise the longitudinal movement leaves half or thereabouts of the thickness of `the sole at the junction of the forepart and waist unfinished. To obviate this, a rocking or tilting motion is imparted to the boot, as the same is moved forward, such motion being obtained in the following manner.

The rest or carrier 67 is pivotally attached to the upper slide 27 of the machine and r0- vided on its under face with rollers 76 w ich project over and are adapted to engage cams 77 adjustably carried on the upper face of the lower slide 28. The rear end of the carrier 67 rests upon a clip shaped spring 78 which keeps the carrier in contact with the slide at its forward end, the op osite end of the spring being rigidly attached) to the slide. As the slide 27 moves forward in the slide or carriage 28, the rollers 76 will ride up the cams 77 and consequently rock or tilt the boot and rest as illustrated in Figs. 8 & 9, and as will be clearly seen in Figs. 7 to 9, the combination of the rocking movement of the carrier and the rise and fall of the tool 10, as the boot is moved forward causes the'tool to follow the variation in the contour of the sole edge and at the various points gives a universal relation between the said tool and The necessary pressure of the toe edge against the tool may be imparted by means of spring buffers 79 carried in the end of the slide 27 and arranged to make contact with a bracket 80 adjustably attached to the slide 28, and by compressing the springs on the buffers maintain the pressure of the tool a ainst the sole edge. If desirable a number o tools and boot carriers may be arranged side by side, so that one operator may superintend the series, each separate carrier being provided with any lwell known separate clutch gear capable of being automaticall thrown out of action at the moment eac boot is completed.

Ihat I claim then is 1. In an edge setting machine the combination with the finishing tool of a boot carrier provided with adjustable means for supporting the toe and heel respectively of a boot, means operable by a hand-wheel to hold said boot in position on the carrier, a slide to which the carrier is pivoted, cams fixed to a part of the machine and rollers on said carrier adapted to ride up the fixed cams to rock or vary the angle of inclination of the boot as the slide moves forward for the purypose described.

2. In an edge setting machine, the combination with a slide a boot carrier pivoted on the slide and adapted to be rocked as the lat- .ter moves forward, of a carryin head, a finishing tool adapted to rise an fall in said carryinff head whereby said tool is caused to follow the contour of the edge of the sole of the boot as the latter is moved around and in contact with the same.

3. In an edge setting machine the combination with the finishing tool,l of a slide, a boot carrier thereon comprising means for supporting and holding the boot and plungers on the slide adapted to be pressed against a fixed part of the machineto/keep'the toe of the boot pressing in contact With the finishing tool substantially as described.

4. In an edge setting machine the combination with the finishing tool, of a boot car- Iier, a slide supportin the latter, a slidin link and rotating cra for moving the sai slide backwards and forwards and a-second slide on which the first slide is mounted, said second slide having movement at right angles to the movement of the first slide to cause the edge of a boot to move around in contact with the finishing tool for the purpose described.

5. In an edge setting machine the combination with the finishing tool of a boot carrier, a slide supportin the latter7 a slidin link and rotating crank for moving the sai slide backwards and forwards, a lower slide mounted on a fixed bed and Weights or balancing means connected with said slide to maintain the sides of the edge of the boot in contact with the finishing tool as the lower slide moves laterally for the purpose described.

6. An ed e setting machine comprising a tool, a fixe head carrying said tool, means for actuating the tool, a boot carrier, a slide carrying the same, a second slide carrying the first mentioned slide, a crank, a shaft, a worm and worm wheel connected with the crank and shaft for rotating the crank and connections from the crank to the slides for moving the same so as to cause the edge of a boot to niove round in contact with the finishing tool.A

In testimony whereof I affix my signature in presence of two witnesses.

' ALFRED HARRINGTON.

Witnesses:

E. N. LEWIS, WALTER W. BALL. 

